Description from Flora of China
Echites fragrans Moon, Cat. Pl. Ceylon 20. 1824; Chonemorpha grandiflora G. Don; C. macrophylla G. Don; C. mollis Miquel; C. rheedei Ridley; E. macrophylla Roxburgh, not Kunth.
Lianas to 30 m, hirsute except for flowers. Petiole to 2 cm; leaf blade suborbicular to broadly ovate, 15-45 X 13-45 cm, papery, base cordate, apex acute or rounded, cuspidate; lateral veins 10-12 pairs. Calyx tubular, ca. 1 cm, apex toothed, glabrescent outside. Corolla white, limb to 8 cm wide; tube 3.5-4.5 cm, dilated at base, glabrous outside, throat villous; lobes obliquely obovate, ca. 3.5 cm. Filaments short pubescent. Follicles cylindric to fusiform, to 30 X 2 cm. Seeds oblong, coma ca. 5 cm. Fl. May-Jul. 2n = 20.
Dense montane forests, often clinging to trees. Guangxi, Yunnan; cultivated in Fujian and Guangdong [India, Indonesia, Malaysia, Myanmar, Sri Lanka, Thailand].